Application: for Toyota Sienna 2004-2006, 3.3L. Position: Upstream & Downstream Reference #: 89467-48050, 89465-08040, 89467-08040, 89465-08030. 234-9042, 234-4168, 234-9012, 234-4516. Package Include: 2*Air Fuel Ratio Upstream Oxygen Sensor & 2*Downstream Oxygen Sensor Features: -Our oxygen sensors are designed to determine the oxygen content of the exhaust gas and to improve the fuel efficiency of the vehicle. -With high quality materials that ensure improved performance and long lasting durability. .
